Jacob More Society (EA)
James Madison Society (SAUO)
James (motorcycle) - NCIC motorcycle make code
Jamestown - North Dakota - Airport symbol (OAG)
Jamestown, ND - Location identifier - FAA (FAAL)
Japan Medical Society (SAUO)
Java Message Service (SAUS)
Java Messaging Service (VLIE)
Jewish Media Service - Defunct (EA)
J.M. Smucker Company (EFIS)
Job Management System (SAUS)
Johannesburg Musical Society (SAUO)
John Milton Society for the Blind - Later, JMSB (EA)
Joint Mission Software (SAUO)
Joint Movements Staff - British
Journal of Maltese Studies - A publication (SAUS)
Journal of Management Studies - A publication (SAUS)
Journal of Manufacturing Systems - A publication (SAUS)
Journal of Medical Science - IRCS - Mental Science - Medicine (EDAA)
Journal of Molecular Structure - Medicine (EDAA)
Jump to Subroutine Instruction - Computer science
Junior Medical Student (DAVI)
Mashi - Language code (ETLW)
Morgan Stanley Group, Inc. - AMEX symbol (SAG)
Stello Marine Enterprises Inc., North Chatham, MA - Manufacturer code for watercraft hull identification number (USCG)
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